Patella buttress



FIG. 1 is a front elevational view of a patella buttress showing our design.

FIG. 2 is a first side elevational view of the patella buttress of FIG. 1.

FIG. 3 is second side elevational view of the patella buttress of FIG. 1.

FIG. 4 is a top view of the patella buttress of FIG. 1.

FIG. 5 is a bottom view of the patella buttress of FIG. 1; and,

FIG. 6 is a rear elevational view of the patella buttress of FIG. 1 which displays the patella buttress from the sectional view taken along line 6-6 in FIG. 4.

The broken lines are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a patella buttress, as shown and described. 